 const
    OPER_NOOPER   : word = 0;
    OPER_ALLTOONE : word = 1;
    OPER_ZAMTAB   : word = 2;
    OPER_DELETE   : word = 3;
    OPER_CHLEVEL  : word = 4;
    OPER_PERENOS  : word = 5;

